Changes to support 7-series VPR flow

SymbiFlow / yosys

SymbiFlow WIP changes for Yosys Open SYnthesis Suite

http://www.clifford.at/yosys/

ISC License

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Changes to support 7-series VPR flow #5

Closed litghost closed 5 years ago

litghost commented 5 years ago

Redo carry chains (again)
Add INIT parameter support for FF's
Add DRAM models and techmaps.

mithro commented 5 years ago

I wonder if we should split the vpr verse non-vpr mappings?

litghost commented 5 years ago

I wonder if we should split the vpr verse non-vpr mappings?

Are you referring to the *_map.v files or the cells_sim.v file?

mithro commented 5 years ago

One or both I guess?

mithro commented 5 years ago

Actually -- do you know if we provide the mapping externally to Yosys?

litghost commented 5 years ago

Actually -- do you know if we provide the mapping externally to Yosys?

Are you asking if we can provide the techmap? Sure.

cliffordwolf commented 5 years ago

What is the ZINI stuff? At first glance this looks like it would break the non-vpr flow. (Afaict there are no _ZINI cells in the Xilinx std cell lib).

cliffordwolf commented 5 years ago

Oops. I've just seen this isn't a PR into the YosysHQ repo. (sorry, going through old github notifications..) keep on hacking.. :)